www.pudn.com > CipherSystem.rar > IDEACipherSystem.h

#ifndef IDEA_CIPHER_SYSTEM_H 
#define IDEA_CIPHER_SYSTEM_H 
 
#include "MyCipherSystem.h" 
#include "GlobalFunctions.h" 
#include  
#include  
 
using std::deque; 
using std::string; 
 
typedef deque binary_stream; 
 
class IDEACipherSystem : public EncryptSystem 
{ 
public: 
	//ensure the input stream is the multiple of eight 
	void GetData(const string& input); 
	void GetKey(const string& key); 
	void Encrypt(); 
	void Decrypt(); 
 
private: 
	//influence the  subKeyStored 
	void SubKeyCreation(const binary_stream& keyBinaryStream128bit); 
	//influence the subKeyStored which has been influenced by the SubKeyCreation 
	void SubKeyModifyForDecrypt(); 
	//influence the subDataBlock 
	void SetSubDataBlock(const binary_stream& textBinaryStream64bit); 
 
	//input: subKeyStored & subDataBlock 
	//output: no return but change the value of the subDataBlock16bit array; 
	void Iterative(); 
 
	int BinaryStreamToInt(const binary_stream& binaryStream16bit); 
	void IntToBinaryStream(int result, binary_stream& binaryStream16bit); 
 
	//mod 65537 mul 
	int MulMod65537(int muled, int mul); 
	int AddMod65536(int added, int add); 
	int AddMod2(int added, int add); 
 
	int AthwartMul(int x); 
	int AthwartAdd(int x); 
private: 
	static const int MOD_ADD_2_16 = 65536; 
	static const int MOD_MUL_2_16_1 = 65537; 
	static const int MOD_ADD_2 = 2; 
 
	int subKeyStored16bit[52]; 
	int subDataBlock16bit[4]; 
	binary_stream keyBinaryStream; 
}; 
#endif //IDEA_CIPHER_SYSTEM_H